同素的

We show that Jordan multiplicative bijective maps on prime operator algebrasmust be additive. As its application, we show that every Jordan * multiplicative bijec-tive map on every factor C~* algebra is a C~* isomorphism or a conjugate C~* isomorphism,in the special case of B, it must be a *-isomorphism or a conjugate *-isomorphism.We also prove the additivity of Jordan multiplicative bijective maps on nest algebras.

证明了素算子代数上Jordan可乘双射的可加性，利用这一结论刻画了因子C~*代数上的Jordan*可乘双射，我们的结果表明这样的映射一定是C~*同构或共轭C~*同构；证明了套代数上的Jordan可乘双射的可加性。

Lividans. Using pIJ903 bearing tsr gene as a vector, the two furthermost fragments of the cluster, 4. 0kb and 1. 5kb in size respectively, were inserted into it. To facilitate the detection of gene replacement, apr gene was placed in the middle of the two inserts. OriT from E coli plasmid RK2 was also incoporated into the vector, therefore, pIJ903 derivatives can be mobilized from E.

在具有硫链丝菌素抗性基因的pIJ903的单—BamHI位点，同向插入了FR-008生物合成基因簇两个最远端的4.0kb和1.5kb片段，并在二者之间插入了可在链霉菌FR-008和变铅青链霉菌中表达的阿泊拉霉素抗性基因，同时也插入了有助于将质粒引入链霉菌的oriT片段，从而构建出了置换整个基因簇的基因置换质粒pHZ691。

The model of programmed crystallization of SPM was proposed based on the moment transformation of the population considering the agglomeration. The optimal temperature-time curves in a batch crystallizer which maximized the terminal mean size and mean weight size can be determined from the application of the Pontryagin Maximum Principle. The calculated crystallization results heating under optimal temperature were compared with ones under linear or natural heating temperature.

根据第四章所得到的螺旋霉素晶体二次成核和晶体生长和布朗扩散引起的聚集动力学，利用第六章所描述的晶体尺寸分布的各阶矩对时间的一阶导数所构成的自封闭的一阶常微分方程组，采用庞得里亚金极大值原理，以温度为控制变量，在满足某些约束条件下，以最大平均尺寸和最大晶体重量平均尺寸为性能指标，计算出了螺旋霉素间歇结晶的最优温度—时间曲线，并同线性加热和自然方式进行了比较。

Alpha-1 antitrypsin is the most abundant circulating protease inhibitor in the body, Dr. Lomas said. Its most common deficiency mutation is the Z allele, where the amino acid lysine is exchanged for glutamic acid at position 342 in the polypeptide chain (Glu342Lys). About 1 in 1700 whites of northern European descent are homozygotes for this mutation and thus have plasma antitrypsin levels that are 10% to 15% below normal, he said.

Lomas博士表示，甲一型抗胰蛋白酵素是身体内最充分的循环蛋白酶抑制剂，最常见的缺损突变在Z对偶基因，该处的胺基酸 lysine与麸氨酸在多胜肽链的第342位置交换(Glu342Lys)；北欧血统白人每1，700人有1人是此一突变的同合子，因此血浆抗胰蛋白酵素值比正常低10%到15%。

Comparison on the effectiveness of different cryoprotectants with chicken embryo primordial germ cells,Effect of heroin dependence on expression and function of glucagon in islet a cells of rats,Establishment of transgenic mouse line skin-specifically expressing hCTLA4-Ig,Resistance selection by meilingmycin and chlorfenapyr and activity changes of detoxicated enzymes in Tetranychus urticae.

文章摘要：鸡胚胎原始生殖细胞对不同冷冻体系适合性的研究，海洛因依赖对大鼠胰岛A细胞胰高血糖素表达和功能的影响，皮肤组织特异性表达hCTLA4-Ig转基因小鼠品系的建立，二斑叶螨对梅岭霉素和溴虫腈的抗性选育及其解毒酶活力变化，北京市褐家鼠种群遗传多态性及与汉坦病毒分布关系的研究，金乌贼同工酶分析，Nogo—A在成年大鼠脑内神经元的分布。

Breast cancer commonly metastasizes to bones, producing both osteolytic and osteoblastic deposits. Different markers for quantitative determination of bone turnover have been developed to evaluate bone metastases of breast cancer. The urinary deoxypyridionline, a crosslink product of collagen molecules found in bone and excreted in urine during bone degradation, and bone specific alkaline phosphatase, an isoenzyme localized in the membrane of osteoblasts and released in circulation during bone formation, were recently described as a group of markers of bone turnover in metastatic cancer.

乳癌患者常见骨髓转移造成溶骨性及成骨性沈积物，而利用不同标记来定量骨质转换形态，可以评估乳癌骨骼转移的变化，而尿液中Deoxypyridinoline是骨质内胶原分子在骨骼破坏分解时至尿中的产物，骨特殊碱性磷酸酵素是一种同形酵素，位於成骨细胞的外膜且在骨骼形成时释放至血液中，利用此两种生化标记，可以来预测乳癌转移至骨骼的转换情形。

When applied the spiny eel X chromosome library probes to the chromosomes of the two fish, different signals were distributed: in Siniperca chuatsi, besides some little signals on lot of autosomes, a large bright signal region was detected on the 8th chromosomes, which represented a synteny of spiny eel X chromosomes; but in Channa argus, no distinct synteny was found.

当以刺鳅的生物素标记X文库探针对鳜鱼和乌鳢的有丝分裂染色体进行染色体涂绘后，经过核型分析和统计分析表明，在这两种鱼的染色体上的杂交信号分布是不同的：在乌鳢中，除散在信号外，在其第八号染色体近着丝粒部位存在着一段较大的信号结合区域，应是与刺鳅的X染色体同源的保守同线群，而在鳜鱼中，只有散在信号分布于多条染色体上，没有明显的保守同线群存在。

Bitter compounds in saliva activate particular T2R/TRB isoforms activate gustducin heterotimers, activated α-gustducin stimulates PDE to hydrolyze cAMP, the decreased cAMP may disinhibit cyclic nucleotide-inhibited channels to elevate intracellular Ca2+.

唾液中的苦味化合物激活T2R/TRB同型体，这种激活导致味导素异聚体的激活，被激活的α-味导素又激活PDE，PDE水解cAMP，cAMP水平的降低使环核苷酸抑制的阳离子通道去抑制，从而使细胞内Ca2+升高。

Salty and sour directly transduction by apical channels that are non-gated channel or chemically-gated channel. Bitter compounds in saliva activate particular T2R/TRB isoforms which activate gustducin heterotimers, activated α-gustducin stimulates PDE to hydrolyze cAMP, the decreased cAMP may disinhibit cyclic nucleotide-inhibited channels to elevate intracellular Ca2+.

咸和酸直接通过顶部非门控或化学门控离子通道转导唾液中的苦味化合物激活T2R/TRB同型体，激活导致味导素异聚体的激活，被激活的α-味导素又激活PDE，PDE水解cAMP，cAMP水平的降低使环核苷酸抑制的阳离子通道去抑制，从而使细胞内Ca2+升高。

Bitter compounds in saliva activate particular T2R/TRB isoforms which activate gustducin heterotimers, activated α-gustducin stimulates PDE to hydrolyze cAMP, the decreased cAMP may disinhibit cyclic nucleotide-inhibited channels to elevate intracellular Ca2+.

唾液中的苦味化合物激活T2R/TRB同型体，这种激活导致味导素异聚体的激活，被激活的α-味导素又激活PDE，PDE水解cAMP，cAMP水平的降低使环核苷酸抑制的阳离子通道去抑制，从而使细胞内Ca2+升高。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。